[TechAssist] Re: Hitachi 50UX27K AP63 bright screen 3 color retrace lines
- From: tjanphyl@xxxxxxxxxxxxxxx
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 24 Oct 2005 12:53:26 -0400
Larry, nothing specific yet, but here are some good Hitachi sym-cures:
http://wa6ati.com/Hitachi.htm
Also, a lot of mentions of poor solder on 9V regulators and elsewhere.
Resolder!But I assume if the shutdown is preceded by a very bright
screen, it may be the ABL triggering the SD as a normal function.Is
the excess bright raster grey scaled,another words all CRTs balanced?
If not, one of the three could be shorting,hence pulling one anode at
a time could narrow it down. Since you were just in it, look closely
for any plug assys slightly loose and not seated good,etc.Will check
further.
Phil
Phil Bader, Pres.
Jan Phyl TV Inc
Winter Haven, Fl
(863) 299-8821
estab. 1976
personal email: pbader@xxxxxxxxxxxxxxx
----- Original Message -----
From: Larry E <videotech@xxxxxxxxxxxx>
Date: Monday, October 24, 2005 12:11 pm
Subject: [TechAssist] Hitachi 50UX27K AP63 bright screen 3 color
retrace lines
> Hi Guys, went out on this set last friday and installed 3
> stk4274`s for typical convergence failure, found no bad/burnt
> resistors so I replaced stk`s set came up perfectly didn`t even
> have to touch the "magic focus", customer just called
> and said set is now getting very bright, shakes, and has colored
> retrace lines from top to bottom, shuts off set for
> several hours and set will come on with perfect picture for 5
> minutes and then repeat the problem, going back out
> late this afternoon to check it and it`s a 25 mile one way trip,
> any ideas ? Larry E
>
> Larry Eastman
> American TV & Electronics
> Crystal River, Fl. 34428
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